kern/180966: snd_envy24: recording broken
>Number: 180966
>Category: kern
>Synopsis: snd_envy24: recording broken
>Confidential: no
>Severity: non-critical
>Priority: low
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Wed Jul 31 11:40:00 UTC 2013
>Closed-Date:
>Last-Modified:
>Originator: Eugene Zheganin
>Release: 10.0-CURRENT
>Organization:
Vivat-Trade LLC
>Environment:
FreeBSD icecast.bolid.fm 10.0-CURRENT FreeBSD 10.0-CURRENT #0 r253444: Thu Jul 18 17:25:07 YEKT 2013 emz@:/usr/obj/usr/src/sys/GENERIC amd64
>Description:
I have an M-Audio Audiophile 24/96 board.
While everything is fine while playing the sound, recording sound from the line-in gives distorted sound (like in VoIP when some frames are dropping, only in this case no clean sound can be heard at all).
Attempted measures to resolve:
- changing HZ from 1000 to 100
- changing HZ from 100 to 4000
- disabling virtual channels
- changing dev.pcm.1.play.vchanrate/dev.pcm.1.play.vchanrate from 48000 to 41000 and back
- enabling dev.pcm.0.bitperfect
This didn't help, after some struggling I enabled the onboard hda card and got clean sound ot it's line-in.
>How-To-Repeat:
Try to record sound from snd_envy24(4) card.
>Fix:
Use snd_hda(4) for the purpose of sound recording.
>Release-Note:
>Audit-Trail:
>Unformatted:
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